John s



J. S. PURDY. Fountain Pen.

No'. 232,545. Patented Sept. 21,1880.

7 NPEI'ERS, PHOTO-UTI'IOGRAPHER, WASHINGTON, D C- V v I embracing mysaid invention.

I UNITED STATES ATENT OFFICE.

JOHN s. PURDY, or BROOKLYN, NEW YORK.

FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 232,545, datedSeptember 21, 1880. Application filed February 21, 1880.

To all whom it may concern:

Be it known that I, JOHN S. PURDY, of Brooklyn, in the county of Kingsand State of New York, have invented certain Improvements inFountain-Pens, of which the following is a specification.

This invention relates to that class of pens in which the ink issupplied to the pen from a fountain or reservoir formed in the handle orholder thereof; and said invention comprises certain novel combinationsof parts whereby the gumming of the ink during its passage to the pen isguarded against, and whereby, moreover, provision is made for supplyingink to the pen however widely the nibs thereof may be spread apart inthe making of a heavy stroke, a fountain-pen possessed of greatpractical superiority over those hitherto in use being thereby provided.

Figure l is a side view of a fountain-pen Fig. 2 is a 1ongitudinalsectional view of the same; and Figs. 3, 4, and 5 are detailed views ofcertain parts of the said pen detached from each other, the better toshow their form and construction.

A is the holder, within which 'is provided the fountain orreservoir,from which ink passes to the conduit B and through the outlet to, bywhich the ink passes to the pen, as hereinafter explained.

Inasmuch as the holder A, containing the fountain, as aforesaid, andconduit B may be of any ordinary or suitable description, they need nospecific description here.

G is the pen, of any ordinary type and character, and inserted in asuitable holding-slit provided in the adjacent end of the holder A.

Between the pen 0 and the conduit B is an elastic metal plate, D, theform of which is more fully shown in Fig. 4, and which is secured at itsinner end to the handle A. The outer end of said plateD is made of thetapering form represented at b in Fig. 4 aforesaid, and has in it alongitudinal slit, 0. Said outer end of said plate D is, moreover,curved slightly upward, as represented in Figs. 1 and 2, so as to verynearly cover the under side of the cavity f in the outermost portion ofthe conduit B, there being, however, in the normal i condition of saidplate a space, 9, between the outer extremity of the plate D and theadjacent outer end of the cavity f.

It will be observed that although the plate D practically closes theunder side of the aforesaid cavity f, yet it rests upon the uppersurface of the pen 0 in such a manner that the upward movement of thepen under the stress or pressure of writing will force the plate Dupward, and will consequently give to the taperingportion or tongue I) avibrating upand-down movement, so to speak, as the pressure upon thepoint of the pen varies. It is this operation of the plate withreference to the cavity f to the conduit B and to the pen 0 that givesutility and value to the operation of my said invention.

Inasmuch as the ink, if undisturbed, or nearly so, at the opening 9,would clog or gum, and thereby interfere with the flow to the pen, it isby the constant movement of the aforesaid tapering portion or tongue I)of the plate D continuously urged or pumped downward upon the back ofthe pen. But this is not all. The outer portion aforesaid of the platebearing upon the upper part of the nib or split portion of the pen, andvibrating as hereinbefore explained, exerts a greater action as the penis violently used, so that when the pen is used with a hard pressure toproduce a broad mark the flow of ink from the pen is proportionatelyincreased, and a sufficient quantity of ink is supplied to the pen, nomatter how widely apart the two lateral portions of its nib are spreadin making a broad stroke.

The slit 0 in the outermost end of the plate I) tends to greatlyincrease the elasticity of the latter, and is found in practice to verymuch increase the sufficiency during the oper ation of the pen, ashereinbefore explained.

What I claim as my invention is- 1. In a fountain pen, the plate D,placed between the pen 0 and the conduit B, the parts being so arrangedthat the vibratory motion of the pen communicates a like movement 'tothe plate D to urge or pump the ink from the conduit to the back of thepen, substantially as and for the purpose herein set forth.

2. The combination, in a fountain-pen, of the following elements,namely: a handle, A, containing a fountain for the ink, a conduit, B,back of the pen, all substantially as and for having a cavity, f, andarranged to conduct the purpose herein set forth.

the ink from the fountain toward the pen a pen, 0, placed below orunderneath the 0611- JOHN PURDY' dnit B, and an elastic plate, D,constructed 1 Witnesses:

with the slit 0 and tongue I), and interposed l JAMES A. WHITNEY,

between the cavity f of the conduit and the CHAS. H. T. DOXAT.

